Table 3.

Correlation between NANOG and SOX2 expression, and 5-year survival rates.

Patients	NANOG-Positive Expression	NANOG-Negative Expression	p	SOX2-Positive Expression	SOX2-Negative Expression	p	Double-Positive Expression	Double-Negative Expression	p
Whole tumor series
DSS	40%	29%	0.055	42%	35%	0.101	40%	26%	0.019
OS	28%	20%	0.012	26%	26%	0.221	24%	17%	0.015
Oropharyngeal tumors
DSS	43%	22%	0.013	43%	35%	0.312	40%	18%	0.031
OS	29%	16%	0.011	28%	24%	0.319	25%	13%	0.027
Hypopharyngeal tumors
DSS	26%	14%	0.126	20%	26%	0.420	20%	14%	0.095
OS	21%	13%	0.049	14%	23%	0.696	14%	13%	0.106
Laryngeal tumors
DSS	52%	58%	0.580	57%	50%	0.681	57%	59%	0.734
OS	36%	38%	0.951	34%	38%	0.885	32%	36%	0.887